#include <bits/stdc++.h>
using namespace std;
int main(void){
    int G_x, G_y;
    cin >> G_x >> G_y;
    if(G_x == 0 && G_y == 0){cout << 0 << endl;}
    else if(G_x == G_y || G_x == -G_y || G_x == 0 || G_y == 0){cout << 1 << endl;}
    else{cout << 2 << endl;}
}